package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端的明文密码进行加密
         password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    public void save(EmployeeDTO employeeDTO) {
    //System.out.println("当前线程的id:"+Thread.currentThread().getId());
    Employee employee = new Employee();
//    employee.setName(employeeDTO.getName());
//    employee.setPhone(employeeDTO.getPhone());
    //对象属性拷贝,简化实体类代码,前提实体类和DTO属性名一样
    BeanUtils.copyProperties(employeeDTO,employee);
    //设置账号的状态 默认1正常，0锁定
    employee.setStatus(StatusConstant.ENABLE);
        //设置默认密码123456
    employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
    //设置当前记录创建事件和修改事件
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //设置当前记录人id和修改人id
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }


    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {

        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page= employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        PageResult pageResult = new PageResult(total,records);
        return pageResult;
    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
//    Employee employee=new Employee();
//    employee.setId(id);
//    employee.setStatus(status);
        Employee employee=Employee.builder()
                .id(id)
                .status(status)
                .build();
    employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工
     * @return
     */
    public Employee getById(Long id) {
    Employee employee=employeeMapper.getById(id);
    employee.setPassword("*****");
        return employee;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     * @return
     */
    public void update(EmployeeDTO employeeDTO) {
    Employee employee= new Employee();
    //属性拷贝
    BeanUtils.copyProperties(employeeDTO,employee);
    //因为dto没有设置更新时间，所有手动设置
   // employee.setUpdateTime(LocalDateTime.now());
    //修改人用BaseContext.getCurrentId()方法获得,线程局部标量
   // employee.setUpdateUser(BaseContext.getCurrentId());
    employeeMapper.update(employee);
    }

}
